hola mundo

Tutorial on creating a custom Ruby gem package, rubygem Write a simple example 1. Create the following folder Note: The lib directory must have a rb file with the same name as your gem. Copy codeThe Code is as follows:$ Cd hola$ Tree.├ ── Hola.

Groups the objects in a list, using key-value pairs in groupsThe Nsdictionary nsmutabledictionary class creates a list of objects with keys.If you need to add or remove objects to the dictionary, use Nsmutabledictionary1 Creation of the dictionary

Write one of the simplest examples 1. Build the following folder Note: The Lib directory must have a RB file that is the same as your gem name. Copy Code code as follows: $ CD Hola $ tree . ├──hola.gemspec └──lib └──hola.

This lesson'll show when to apply groupBy in the real world. This RxJS operator was best suited when a source observable represents many data sources, e.g. an observable for multitouch Events.ConstBusobservable =Rx.Observable.of ({code:'en -US',

Pattern Matching FunctionThe most powerful functions in the string library are:String. Find (string SEARCH)String. gsub (Replacement of global strings)String. gfind (Global string SEARCH)String. gmatch (returns the iterator that finds the

Pattern matching function The most powerful functions in the string library are: Copy Code code as follows: String.find (String lookup) String.gsub (Global string substitution) String.gfind (Global string lookup) String.gmatch (

This Valentine's Day virus is Vbs/san by the author of the virus, because the virus is able to set IE's starting page as a Spanish site, which is much like Vbs/san. The virus hides itself in an HTML file, encrypts its own code using a

It is a good practice to extract strings from the UI in the application code and store them in additional files. Android in each project through a resource directory makes this matter very simple.If you created a project using the Android SDK tool,

When learning programming, always encounter such difficulties, the author compiled the programming learning stages of the problem and mentality analysis. Hope for the vast number of programming enthusiasts to help.1th Stage: OpportunitiesYou are

What are the steps to learn programming in sequence? What are the steps for learning programming in sequence? Learning programming not only requires persistence, but also powerful logic thinking, but also provides a sound way to learn programming.